Dish-washing machine.



No. 657,25I. Patented Sept. 4, |900. E. SANDSTHOM.

DISH WASHING MACHINE.

(Application led Nov. 7, 1899.)

l l a (No Model.)

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llniiTnn `TnQTns PATENT Curran.

EDVARD SANDSTROM, OF WILMNGTON, DELAlVARE.

DISH-WASHING iviAc'zl-llurfa.V

SPECIFICATON forming part of Letters Patent No. 657,251, dated September4, 1900. Application filed November 7, 1899. Serial No. 736,200. (Nomodel.)

To ctZZ whom it may concern:

Be it known that I, EDWARD SANDs'rnoM, a citizen of the United States ofAmerica, and a resident of Wilmington, county of New Castle, and Stateof Delaware, have invented certain new and useful Improvements in Dish-Vashing Machines, of which the following is a specification.

My invention comprises a couple of upright reversely-rotatin gsheet-metal cans one within another and both within a water-holding tuband being constructed and provided with means for operating them ,ashereinafter described, whereby it is designed to provide a simple,efficient, and rapid dish-Washing machine that may be made in anydesired size of small or large capacity, either for manual or otherpower and which as at present constructed isillustrated intheaccompanying drawings, in which- Figure 1 is a sectional elevation of myimproved dish-washing machine. Fig. 2 is a top view with the coverremoved. Fig.' 3 isa side elevation of part of the inner drum. Fig. L1is a detail of the operating mechanism in vertical section. Fig. 5 is adetail' in plan view of the cross-bar of the water-circulating can.

The construction and operation of my improved dish-washing machine areas follows:

In the first place a suitable tub a, preferably of wood, is set up onany suitable support b, said tub being provided with a central uprighttube o, extending through the bottom and reaching nearly to the top ofthe tub and also provided with a suitable cover CZ, in which is asuitable inlet @for the water, and a faucetfis attached to the bottomlof the tub for drawing otf the water. Within the tub is a sheet-metalcan g, a little smaller than the tub, open at the top and centrallyperforated in the bottom to receive the tube c when inserted in the tub,with a down- Wardly--projecting collar h of the bottoni for astep-bearing to rest on the bottom of the tub and revolve thereon. Onthe top of this can is a cross-bar t', detachably connected at its endsto the sides of the tub, respectively,

iand at its center receiving the upper end of a shaftj, extending upthrough tube c from below the bottom of the tub, where it has astep-bearing 7o', and is geared with the drivyalso centered on tube cand ing-shaft k by bevel-wheels Z for rotating the can g, said shaftbeing keyed or feathered in the cross-bar t', as indicated at m and n,or connected in any other suitable Way for so driving it. Within can gis another can o, similarly centered on tube o, but resting on ashoulderp so as to rotate. It has a cross-bar g at the top,

having a bevelwheel s attached to it, said bar and wheel both adapted toturn freely on the tube. Above this Wheel s a sleeve o is detachablysecured,

.by a set-screw u or other means, to the tube c, said sleeve havin galateral stud t, on which a bevel-wheel w is pivoted, which gears withwheel s and with another wheel ro, which is mounted on shaft j directlyunder cross-bar t', by which motion is transmitted from shaft j to cano, driving it reversely to the direction in which can g turns. The Wheelis represented as feather-keyed on the shaft, so as to be readilydetached when desired.. Both cans are slotted in the cylinders, as at y,and perforatedin the bottoms, as at a', for free circulation of water.Can g has inwardly-projecting paddle-Hanges a', and can o hasoutwardly-projecting paddle-flanges b for effecting'lively circulationof water. Can o also has upwardly-projecting spurs o' of the bottom toprevent the dishes from sliding about on the bottom, and said can isprovided with a removable partition d about midway of the top and bottomfor separating the charge of dishes into two tiers, by which moreeffective action is attained. More of such partitions may be used, ifdesired.

The dishes are placed in the inner can o while the tub is empty, andwhen properly charged Water is let into the tub and the cans are set inmotion at a rapid rate, whereby through the reverse movements of the twocans and the paddle-flanges violent and effective currents are inducedwell adapted for quickly and effectively cleaning the dishes. AfterWashing, free circulation of air for drying the dishes is obtained byexterior standpipesf, opening into the tub near the botd tom, andothers, g/, connected higher up, as indicated by the dotted circle g2,Fig. 1, through which further rotation of the cans induce activecurrents, which dry the dishes quickly.

A guardtube 7L is provided to cover tho IOO standing tube c and rotatewith the can to prevent the dishes from rubbing against the said tube c,by which they might be injured, and it serves for the upper edges ofsome dishes to rest against it, the lower edges be# ing set inside ofthe spurs c when it may be desired to so arrange them. For simplermachines the outer can may be omitted.

When it is desired to separate the parts for 3 effectively cleaning themachine, the cover d will be removed, cross-bar t taken off, Wheel andsleeve udetached, can o lifted out, and

ing cans located Within the tub and one Within i the'other,stand-tube'on which 'said cans-are i centered, driving-shaft located inthe standtube'and connected at the top Wit-h ythe outer can for rotatingit, the gear-train of bevelwheels and the intermediate wheel-supportingsleeve on the stand-tube connecting the inner tank with thedriving-shaft, and means for lactuating said driving-shaft.

3. In a dish-Washing machine, the combination of the stationary tub,reversely-rotating cans located Within the tub and one Within the other,stand-tube on which said cans are centered, driving-shaft located in thestandtube, and connected at the top With the outer i can '-for rotatingit, the gear-train of bevel- Wheels and the intermediate wheel-support;ing sleeve on the stand-tube connecting the inner tank withthe-driving-sh aft, Vmeans for actuating .the driving-shaft, andthepaddle-A an-ges -of 'the cans intermediate of the respective cylindersofthe cans, said-cans-having Ithe slots andperforations'forthecirculation of lthe Water.

Signed by me this 30th day of September,

EDWARD SA-NDSTROM. Witnesses:

CHARLES G. GUYER, A-KE 'DIsEn-L.

